About a month ago I posted the following question:
/"Ok, so I'm too lazy to do the research on my own, but everyone is so
helpful, you make it too easy to ask...... I just installed an F4B and
new Holley 0-1848-1 (465 cfm). The car idles very well and runs at all
RPM's pretty strong. The only issue is when you hit the gas quickly.
Then it stumbles. If you tickle it a bit, it picks right up and goes
quickly and strongly up through the RPM's to redline. Sounds like an
accelerator pump adjustment of some sort????? Timing and advance appears
to be right on. Checked for vacuum leaks too, and everything looks OK.
Any suggestions on tweaking the carb?"
/
Just to follow-up, the car now runs super-good. I took it over to my
local drag-racer mechanic who has lots of experience with Holley's. He
told me to go buy a Holley spring kit for the secondaries and a ramp kit
for the accelerator pump, because we would likely need to try some
different combinations. As it turns out, it was even simpler than
that. The first thing he checked was the float level in both bowls.
Remember that this was a NEW Holley 1848, right out of the box. The
front level was low. The rear level was beyond low. We readjusted both
to the correct factory spec. Then he checked the actuator rod for the
accelerator pump. It was adjusted much too long to the point that it
was only giving a partial stroke during each pump. He adjusted it
shorter to give a full stroke. DONE. That was it. No need for any
additional parts. It idles, runs and accelerates fantastic now.
Another lesson learned. Double-check the factory settings too! Hope
that might be helpful to someone else out there.
-Randy
--
Randy Smith
INNER QUEST, Inc.
34752 Charles Town Pike
Purcellville, VA 20132
703-478-1078
540-668-6699
540-668-6253 fax
InnerQuestOnline.com <http://www.innerquestonline.com/>
RSSmithIQ@cs.com
Tiger- B382000189
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